"I've only seen one episode of Yuru Yuri and none of Hidamari Sketch.
The only thing I know about it is that the same person who designed the characters in it did the character designs in Madoka.

Giga's only experience with it is when I said "WIIIIIIIIIIIDE FAAAAAAAACE!" and posted one of these in a skype chat."
To not spam that thread up: If you liked Yuru you might like Hidamari. Its just Alotttttttttttttt slower paced. But im p excited over all this nonsense.